A kind of temperature sensor and gyroscope

Abstract

The invention provides a temperature sensor and a gyroscope. The temperature sensor comprises a voltage comparison module used for comparing a temperature-related input voltage received by an input end of the voltage comparison module according to a preset first reference voltage and a preset second reference voltage to output a voltage signal with a specified clock period and a specified clock duty ratio at an output end of the voltage comparison module, wherein the first reference voltage is smaller than the second reference voltage. The temperature sensor may also include a current generation module, a current and voltage conversion module, and a level conversion module. According to the temperature sensor, an ADC module of a traditional temperature sensor is substituted with the voltage comparison module, the functions of the temperature sensor are achieved through the voltage comparison module, the current generation module, the current and voltage conversion module and the levelconversion module, the ADC module in the traditional temperature sensor is omitted while the detection precision of the temperature sensor is guaranteed, the power consumption of the temperature sensor during operation is reduced, and the area is reduced.

Description

technical field [0001] The invention relates to the field of temperature detection, in particular to a temperature sensor and a gyroscope. Background technique [0002] Temperature sensors are widely used in mems sensors, such as three-axis gyroscopes and three-axis accelerometers. It is necessary to accurately collect the temperature information of the sensor chip and perform temperature compensation through digital algorithms; now, multi-point detection is also required in six-axis inertial systems. The temperature data is used for temperature detection, thereby dynamically eliminating the influence of temperature on the inertial system. Complementary metal-oxide-semiconductor temperature sensors utilize the stable temperature characteristics of transistors and are widely used. The most common method at present is to realize digital output by passing a voltage or current that changes linearly with temperature through an ADC (analog-to-digital converter), but this method u...

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Problems solved by technology

[0003] In view of the shortcomings of the prior art described above, the object of the present invention is to provide a temperature sensor and a gyroscope, which are used to solve the problems in the prior art that the power consumption of the temperature sensor cannot be reduced while ensuring the accuracy of the temperature sensor.

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